Grammarly HomeProductLearnFeaturesProduct DemoTrust & SecurityDownloadDesktopMobileBrowserWorkBy Team SizeEnterpriseTeams & BusinessesIndividualsBy Team FunctionCustomer SupportMarketingITSalesHREducationStudentsInstitutionsPricingResourcesLearnBlogCustomer StoriesBusiness Events & ReportsEducation Events & ReportsSupport CenterToolsAI Writing ToolsGrammar CheckerPlagiarism CheckerParaphrasing ToolContact SalesLog inGet GrammarlyIt's freeGrammarly HomeProductLearnFeaturesProduct DemoTrust & SecurityDownloadDesktopMobileBrowserWorkBy Team SizeEnterpriseTeams & BusinessesIndividualsBy Team FunctionCustomer SupportMarketingITSalesHREducationStudentsInstitutionsPricingResourcesLearnBlogCustomer StoriesBusiness Events & ReportsEducation Events & ReportsSupport CenterToolsAI Writing ToolsGrammar CheckerPlagiarism CheckerParaphrasing ToolGet GrammarlyIt's freeContact SalesLog inGrammarly Blog HomeWritingWriting TipsGrammarStudentsProfessionalsLifestyleProductCompanyGrammarly HomeWritingWriting TipsGrammarStudentsProfessionalsLifestyleProductCompanyGet GrammarlyIt's freeContact SalesLog inWhat Is a Subordinate Clause?Catherine TraffisUpdated on December 23, 2020GrammarA subordinate clause is a clause that cannot stand alone as a complete sentence; it merely complements a sentence’s main clause, thereby adding to the whole unit of meaning. Because a subordinate clause is dependent upon a main clause to be meaningful, it is also referred to as a dependent clause. Whether you use the term subordinate or dependent to describe the clause, this clause’s function is clear: It provides informational support to the main event of the sentence. This main clause will be independent: it can stand on its own as a complete sentence. But perhaps this isn’t all we need to convey. We can all go for ice cream if I can find my wallet. If I can find my wallet adds substantially to the meaning of the sentence. It is too soon to celebrate about our ice cream outing because there is a task at hand. We have to first find that wallet. On its own, if I can find my wallet is a subordinate clause; it is not a full unit of meaning. If it was written separately as a sentence, the result would be a sentence fragment—your English teacher’s pet peeve. What will happen if I can find my wallet? If a clause in your sentence leaves us hanging like this when set apart on its own, it is a subordinate clause. Subordinate clauses will often begin with subordinating conjunctions, which are words that link dependent clauses to independent clauses, such as for, as, since, therefore, hence, consequently, though, due to, provided that, because, unless, once, while, when, whenever, where, wherever, before, and after. They can also begin with relative pronouns such as that, which, who, whom, whichever, whoever, whomever, and whose. Spotting these words can tip you off that you are dealing with a subordinate clause rather than a main clause. Now that you can identify a subordinate or dependent clause, you may wonder how this information can be helpful to you. The answer to that is simple. Knowing which clauses are main (independent) and which are subordinate (dependent) will help you organize your ideas and place your commas correctly. The best part is, it is actually quite simple. When a subordinate clause begins a sentence, it has a comma after it. When the main clause begins the sentence, there is no comma to separate it from the dependent clause. If I can find my wallet we can all go for ice cream. We can all go for ice cream, if I can find my wallet. If I can find my wallet, we can all go for ice cream. We can all go for ice cream if I can find my wallet. Punctuating subordinate clauses only gets tricky when they begin with relative pronouns such as that, which, who, when, where, and whose. Conveniently, this type of subordinate clause can be referred to as a relative clause. There are two types of relative clauses: restrictive and nonrestrictive. Restrictive clauses are sometimes referred to as essential clauses. This is because they are essential to the meaning of the sentences they are a part of. Elements of a sentence that are essential should not be set apart with commas. I enjoy watching movies that employ lots of special effects. There should be no comma separating the restrictive clause that employ lots of special effects from the main clause I enjoy watching movies because it is essential to the meaning of the sentence. The opposite is true with nonrestrictive clauses: They can be excised from a sentence without altering its core meaning. Since they are nonessential, they should always be set apart with commas in a sentence. Often, nonrestrictive clauses will “interrupt” a main clause, as in the example below, and when that happens, you should insert a comma both before and after the clause. Watching Star Wars, which has lots of special effects, is my favorite thing to do. Without the nonrestrictive clause which has lots of special effects, the core idea of the sentence, Watching Star Wars is my favorite thing to do, is still intact. Subordinate clauses can be tricky, but they don’t have to trip you up. 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